std::indirectly_swappable

Since C++20

Header: <iterator>

The concept indirectly_swappable specifies a relationship between two types respectively modelling std::indirectly_readable, where their referenced types can be swapped.

# Declarations

template< class I1, class I2 = I1 >
concept indirectly_swappable =
std::indirectly_readable<I1> &&
std::indirectly_readable<I2> &&
requires( const I1 i1, const I2 i2 )
{
ranges::iter_swap(i1, i1);
ranges::iter_swap(i1, i2);
ranges::iter_swap(i2, i1);
ranges::iter_swap(i2, i2);
};

(since C++20)

# See also